Date: Tue, 16 Jan 1996 08:17:04 +0200 (IST)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
To: Kenneth Abrahamsson <etxkeab AT inetx4 DOT ericsson DOT se>
Cc: djgpp AT delorie DOT com
Subject: Re: Problems with Genclass


On Mon, 15 Jan 1996, Kenneth Abrahamsson wrote:

> >> I have problems building the Genclass utility. I've tried using both DJGPP112m4
> >> and V2b4 without success. In the first case it did compile but failed to link,
> >> giving a couple of error messages as:
> >> "Undeclared reference: '__pure_virtual'".
> >
> >This means that you need to link in the g++ library; add -lgpp onto the end of
> >your command line.
> >
> 
> The problem is that I did link with -lgpp...

You might benefit from searching the DJGPP mail/newsgroup archives. 
Problems similar to what you describe have been reported before.  The main
reason to get these messages was a faulty libgcc.a, so first check if your
copy of libgcc.a defines __pure_virtual.  If it does (and I guess it does,
because you say you have this problem with both v1.12m4 and v2, but *do* 
check), then point your favorite Web browser to this URL: 

	http://www.delorie.com/djgpp/mail-archives/

and search the archives for ``__pure_virtual''.  Most likely, you'll find 
the reason for your trouble in a matter of seconds.